I never did comment on this thread did I?
I remember the first time seeing this and going "OH MY GOD OP! IT CAN GAIN TOO MUCH DEFENSE!" but after some experience in card designing and pvp, it seems like it's UP now. At 7
, this isn't coming out early game, it can come out at around 3rd or 4th turn at the earliest probably. And even then, it takes 2
(duo cost) + 1 creature + 1 turn to gain one attack. At a glance, this seems ridiculously slow and weak for a shield, but perhaps this has some usefulness in a firestall?
I think the best card to compare this to be would be hope. Hope requires RoLs for the simplest, but fractal/mitosis to get mass protection. This needs duo cost quanta that isn't cheap, creatures sacrificed, and turns for it to gain defense, probably making it too slow.